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From James Taylor <>
Subject Re: Implicit Columns: Only there when you ask for them...
Date Tue, 18 Apr 2017 02:27:40 GMT
Hey Jacques,
The EXTENDS (col1 type, col2 type)  keyword can be used for this (and the
EXTENDS keyword is optional). Something like this in Phoenix:

SELECT foo FROM bar (my_col VARCHAR) WHERE my_col = 'bas'

Phoenix uses this for dynamic column support.


On Mon, Apr 17, 2017 at 7:17 PM, Jacques Nadeau <> wrote:

> Hey All,
> I remember there being a syntax in Calcite that allowed one to define an
> _EXTRA column or columns that could be referenced in Calcite but wouldn't
> be included in a select *. If I recall, the Splunk adapter used this at one
> point. Does this actually exist or have I lost my mind. I can't seem to
> find a reference to this anywhere.
> thanks!

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